machine politician vs political hack

machine politician and political hack both are nouns.

Word	Noun	Adjective	Verb	Adverb
machine politician	Yes	No	No	No
political hack	Yes	No	No	No

As nouns, machine politician and political hack are synonyms defined as:

machine politician and political hack: a politician who belongs to a small clique that controls a political party for private rather than public ends

Other synonyms of machine politician include hack, ward-heeler.

machine politician (noun)	political hack (noun)
a politician who belongs to a small clique that controls a political party for private rather than public ends	a politician who belongs to a small clique that controls a political party for private rather than public ends